WO1997045306A1 - Druckspeicher für fahrzeugbremsanlage - Google Patents
Druckspeicher für fahrzeugbremsanlage Download PDFInfo
- Publication number
- WO1997045306A1 WO1997045306A1 PCT/EP1997/002782 EP9702782W WO9745306A1 WO 1997045306 A1 WO1997045306 A1 WO 1997045306A1 EP 9702782 W EP9702782 W EP 9702782W WO 9745306 A1 WO9745306 A1 WO 9745306A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- spring
- pressure accumulator
- arrangement
- wall
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/06—Applications or arrangements of reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/04—Accumulators
- F15B1/08—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor
- F15B1/10—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means
- F15B1/103—Accumulators using a gas cushion; Gas charging devices; Indicators or floats therefor with flexible separating means the separating means being bellows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/20—Accumulator cushioning means
- F15B2201/21—Accumulator cushioning means using springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/30—Accumulator separating means
- F15B2201/315—Accumulator separating means having flexible separating means
- F15B2201/3153—Accumulator separating means having flexible separating means the flexible separating means being bellows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/40—Constructional details of accumulators not otherwise provided for
- F15B2201/41—Liquid ports
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2201/00—Accumulators
- F15B2201/60—Assembling or methods for making accumulators
Definitions
- the present invention relates to an electronically controllable vehicle brake system for a motor vehicle with a cylinder / piston arrangement providing brake fluid, which is actuated by actuating a brake pedal to provide brake fluid acting on a brake of the motor vehicle, the cylinder / piston arrangement having a pump arrangement and a pressure accumulator can be connected, the pressure accumulator having a housing which has a fluid connection for fluid flowing into or out of the housing and a spring arrangement against whose force the brake fluid flowing in through the fluid connection works, characterized in that at least one Part of the spring arrangement is formed by at least part of the housing wall.
- the invention relates to a pressure accumulator, in particular for such an electronic controllable vehicle brake system with a housing, a fluid connection for fluid flowing into or out of the housing, and a spring arrangement, against the force of which brake fluid flowing in through the fluid connection works.
- Pressure accumulators are known in the prior art which are designed as gas piston accumulators, as gas membrane accumulators or as gas multilayer membrane accumulators, or as spring piston accumulators.
- La, lb, lc and ld each schematically illustrate such pressure accumulators.
- the useful volume at 20 ° C. is the same in the variants shown in FIGS. The respective size obviously varies considerably.
- spring piston accumulators there is the problem of wear of the seal between the cylinder and the piston.
- the invention is based, in particular for the vehicle brake system mentioned in the introduction, to provide a pressure accumulator which does not have these disadvantages.
- At least part of the spring arrangement is formed by at least part of the housing wall.
- Part of the spring arrangement is formed at least in sections by a bellows, preferably made of metal.
- another part of the spring arrangement which is preferably arranged in the interior of the housing, acts in parallel with the spring arrangement formed by part of the housing wall.
- This further part of the spring arrangement can be designed as a helical, elastomer or spiral spring or as a plate spring assembly.
- the further part of the spring arrangement outside the housing, for example surrounding the housing.
- the further part of the spring arrangement is preferably formed by a spring element which pulls two rigid wall sections of the housing towards one another.
- the spring element designed as a compression spring.
- the intermediate wall is part of a sleeve which is connected to the second housing wall.
- La - ld show different pressure accumulator variants according to the prior art.
- Fig. Le shows an embodiment of the invention
- FIG. 2 shows a pressure accumulator according to the invention in an enlarged schematic illustration.
- Fig. La shows a gas storage device with a housing 10 which is divided into two rooms by a (not shown) movable membrane.
- a first completely enclosed space I contains gas under pressure.
- a second space II can be pressurized with fluid under pressure through a fluid connection.
- the membrane is displaced so that this first space I is reduced and the fluid penetrates into the second space II .
- 1b shows a known pressure accumulator in which the membrane is designed as a multilayer membrane 14.
- this multilayer membrane is very expensive. Nevertheless, it can at most double the life of the arrangement compared to an arrangement with a simple membrane.
- FIG. 1c shows a gas piston accumulator in which a piston 16 is arranged axially displaceably in a cylinder which simultaneously forms the housing wall 10.
- the piston 16 closes a gas-filled space I.
- the problem with this arrangement is that the seals 18a, 18b are subject to the risk of wear and aging during continuous operation.
- FIG. 1d shows a spring piston accumulator, in which, instead of the gas filling in the first space I, a coil spring 20 is arranged which bears on the piston 16. This solves the problem of temperature dependence. However, there is still the problem of aging and wear of the seals 18a, 18b.
- the configuration according to the invention makes it possible to achieve a space requirement that is only slightly above the space requirement of the gas pressure accumulator according to FIG. 1 a, the same storage volume for brake fluid being assumed in each case. This is demonstrated by the scale comparison between FIGS. 1a to 1d on the one hand and Fig. Le (pressure accumulator according to the invention) on the other hand illustrative.
- the pressure accumulator according to the invention is not (or) hardly temperature-dependent and has no wear problems due to the lack of moving seals
- FIG. 2 shows an embodiment of a pressure accumulator according to the invention with a housing 10, a fluid connection 12 for fluid flowing into or out of the housing 10 and a spring arrangement 30a, 30b, against the force of which by the
- a part of the spring arrangement 30a, 30b is formed by part of the housing wall of the housing 10. This part of the spring arrangement 30a forming part of the housing wall is formed by a metal bellows. For this purpose, another part of the spring arrangement, namely the helical spring 30b, is provided in parallel in the interior of the housing.
- the housing 10 has two rigid wall sections 32, 34 which, in the exemplary embodiment shown, close the end faces of the cylindrical bellows.
- the fluid connection 12 is provided in the one wall section 34.
- the two wall sections 32, 34 are firmly and pressure-tightly connected to the two ends of the metal bellows 30a, so that there is an overall closed space.
- the inside of the first rigid housing wall 32 has a threaded flange 36, into which a screw bolt 38 is screwed.
- a tubular sleeve 40 is supported on the second housing wall, the axial length of which is dimensioned such that it substantially covers the entire space between the first and second housing walls 32, 34.
- the sleeve 40 On its side facing the first housing wall 32, the sleeve 40 has a cover which acts as an intermediate wall 42 and through which the threaded flange 26 projects to form an annular gap 44.
- the spring element 30b is received as a compression spring under pretension. The preload of the spring element 30 can be set by the screw bolt 38.
- the sleeve 40 has on its side facing the second housing wall 34 an outwardly facing annular collar 46, which is received via a retaining ring 48 in the peripheral edge 50 of the second housing cover 34.
- the sleeve 40 (with the retaining ring 48) is inserted into a preassembled unit consisting of the first housing wall 32 and the bellows 30a and the spring 30b is inserted.
- the spring 30b is pressed against the intermediate wall 32 by means of the screw bolt 38.
- the second housing cover 34 is then welded to the edge element 50, so that these form a firm and pressure-resistant connection.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
- Diaphragms And Bellows (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP09541614A JP2000510790A (ja) | 1996-05-30 | 1997-05-28 | 電子制御可能な車両用ブレーキ装置 |
DE59705092T DE59705092D1 (de) | 1996-05-30 | 1997-05-28 | Druckspeicher für fahrzeugbremsanlage |
AT97927069T ATE207426T1 (de) | 1996-05-30 | 1997-05-28 | Druckspeicher für fahrzeugbremsanlage |
EP97927069A EP0901439B1 (de) | 1996-05-30 | 1997-05-28 | Druckspeicher für fahrzeugbremsanlage |
US09/137,795 US6076558A (en) | 1996-05-30 | 1998-08-21 | Electronically controllable vehicle braking system for a motor vehicle |
US09/549,297 US6209583B1 (en) | 1996-05-30 | 2000-04-14 | Pressure accumulator |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19621786A DE19621786B4 (de) | 1996-05-30 | 1996-05-30 | Druckspeicher für eine elektronisch steuerbare Fahrzeugbremsanlage sowie elektronisch steuerbare Fahrzeugbremsanlage mit einem Druckspeicher |
DE19621786.5 | 1996-05-30 | ||
US09/140,199 US6012491A (en) | 1996-05-30 | 1998-08-26 | Pressure accumulator |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/137,795 Continuation US6076558A (en) | 1996-05-30 | 1998-08-21 | Electronically controllable vehicle braking system for a motor vehicle |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997045306A1 true WO1997045306A1 (de) | 1997-12-04 |
Family
ID=26026184
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1997/002782 WO1997045306A1 (de) | 1996-05-30 | 1997-05-28 | Druckspeicher für fahrzeugbremsanlage |
Country Status (3)
Country | Link |
---|---|
US (1) | US6012491A (de) |
EP (1) | EP0901439B1 (de) |
WO (1) | WO1997045306A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6076558A (en) | 1996-05-30 | 2000-06-20 | Lucas Industries Public Limited Company | Electronically controllable vehicle braking system for a motor vehicle |
US7121304B2 (en) * | 2001-12-19 | 2006-10-17 | The United States Of America As Represented By The Administrator Of The U.S. Environmental Protection Agency | Low permeation hydraulic accumulator |
US6772794B2 (en) * | 2002-01-24 | 2004-08-10 | Seguin Carl | Variable volume reservoir |
JP3867648B2 (ja) * | 2002-09-19 | 2007-01-10 | 株式会社アドヴィックス | ベローズ式液圧アキュムレータ |
DE10251780A1 (de) * | 2002-11-05 | 2004-05-19 | Heidelberger Druckmaschinen Ag | Bogenstanz- und -prägemaschine |
DE102019210904B3 (de) * | 2019-07-23 | 2020-12-10 | Audi Ag | Druckspeicher zum Speichern eines Fluids, insbesondere für ein Kraftfahrzeug, sowie Kraftfahrzeug |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3900899A1 (de) * | 1988-01-19 | 1989-07-27 | Nhk Spring Co Ltd | Druckspeicher |
US4880147A (en) * | 1984-03-07 | 1989-11-14 | Tolan Peter J | Air blast generator |
DE3901261A1 (de) * | 1989-01-18 | 1990-07-19 | Bosch Gmbh Robert | Druckbehaelter, insbesondere druckspeicher |
EP0391320A1 (de) * | 1989-04-05 | 1990-10-10 | NHK SPRING CO., Ltd. | Speicher |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1830869A (en) * | 1929-08-14 | 1931-11-10 | Charles Maurice | Automatic dilatation compensator |
US1932666A (en) * | 1931-02-07 | 1933-10-31 | Cons Car Heating Co Inc | Steam-heater regulator |
US1916635A (en) * | 1932-01-21 | 1933-07-04 | Tokheim Oil Tank & Pump Co | Fluid flow regulator |
US2847035A (en) * | 1954-08-11 | 1958-08-12 | Melville F Peters | Fluid circuitry |
US2809665A (en) * | 1955-02-01 | 1957-10-15 | Matthew R Crowe | Water hammer cushioning device |
US3415277A (en) * | 1967-03-20 | 1968-12-10 | Thiokol Chemical Corp | Ullage control |
US4064911A (en) * | 1976-11-17 | 1977-12-27 | Albrecht David E | Hydraulic fluid reservoir for a closed hydraulic system |
US4813477A (en) * | 1987-01-30 | 1989-03-21 | Hansen David W | Heat exchanger-filter apparatus for hydrostatic system |
US5655569A (en) * | 1995-02-21 | 1997-08-12 | Kelsey-Hayes Company | Gas charged bladder for low pressure accumulator for vehicular anti-lock braking system |
US5682923A (en) * | 1996-09-30 | 1997-11-04 | Caterpillar Inc. | Accumulator having an internal elastomeric member |
-
1997
- 1997-05-28 EP EP97927069A patent/EP0901439B1/de not_active Expired - Lifetime
- 1997-05-28 WO PCT/EP1997/002782 patent/WO1997045306A1/de not_active Application Discontinuation
-
1998
- 1998-08-26 US US09/140,199 patent/US6012491A/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4880147A (en) * | 1984-03-07 | 1989-11-14 | Tolan Peter J | Air blast generator |
DE3900899A1 (de) * | 1988-01-19 | 1989-07-27 | Nhk Spring Co Ltd | Druckspeicher |
DE3901261A1 (de) * | 1989-01-18 | 1990-07-19 | Bosch Gmbh Robert | Druckbehaelter, insbesondere druckspeicher |
EP0391320A1 (de) * | 1989-04-05 | 1990-10-10 | NHK SPRING CO., Ltd. | Speicher |
Also Published As
Publication number | Publication date |
---|---|
US6012491A (en) | 2000-01-11 |
EP0901439B1 (de) | 2001-10-24 |
EP0901439A1 (de) | 1999-03-17 |
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